php - 图像调整大小出错

Question

我正在尝试使用 WideImage 库调整上传图像的大小。

我需要将其转换为可能的最高分辨率。输出大小应为 Width:460px Height:345px

这是我调整大小的来源：

list($w, $h) = getimagesize($_FILES['image']['tmp_name']);
$wpercent = ($w/460)*100;
$hpercent = ($h/345)*100;
if ($wpercent >= 100 && $hpercent >= 100) {
    // Both is over 100% of the allowed size, then resize so the smaller side match.
    if ($wpercent > $hpercent) {
        // height is smallest
        $remove_percent = $hpercent - 100;
    }else{
        // width is smallest
        $remove_percent = $wpercent - 100;
    }
    $new_h_percent = $hpercent - $remove_percent;
    $new_w_percent = $wpercent - $remove_percent;
    $new_w = ($w/460)*$new_w_percent;
    $new_h = ($h/345)*$new_h_percent;
    $img = $img->resize($new_w, $new_h, 'inside');
    $img = $img->crop("center", "middle", 460, 345);
}else {
    // En af dem er for små
    if ($wpercent > $hpercent) {
        // height is smallest
        $add_percent = 100 - $hpercent;
    }else{
        // width is smallest
        $add_percent = 100 - $wpercent;
    }
    $new_h_percent = $hpercent + $add_percent;
    $new_w_percent = $wpercent + $add_percent;
    $new_w = ($w/460)*$new_w_percent;
    $new_h = ($h/345)*$new_h_percent;
    $img = $img->resize($new_w, $new_h, 'inside');
    $img = $img->crop("center", "middle", 460, 345);
}
$img->saveToFile('uploads/tmp/'.$new_name);

它确实会调整大小，只是缩小到我想要的大小。

有任何想法吗？

如果需要，它也应该裁剪。

Answer 1

        list($w, $h) = getimagesize($_FILES['image']['tmp_name']);
        if ($w != 460 || $h != 345) {
             $img = $img->resize(460, 345, 'inside');
             $img = $img->crop("center", "middle", 460, 345);
        }
        $img->saveToFile('uploads/tmp/'.$new_name);

你想用所有这些 new_h_percent 和 new_w_percent 来完成什么？